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M7.2 Pulo Kunji Aftershock, 2004

Date:

26 December 2004

Epicentre:

W of Pulo Kunji, Great Nicobar Island

Time:

04:21:29 UTC (09:51:29 IST)  

Latitude:

06.910 N (NEIC)

Longitude:

92.960 E (NEIC)

Depth:

39.0 kms (NEIC)

Magnitude:

Mw 7.2 (HRV); Ms 7.5 (NEIC).

Additional Info


Map Disclaimer


A major earthquake struck the Nicobar Islands to the west of Pulo Kunji on Great Nicobar Island, on 26 December 2004 at 09:51 AM local time. It had a magnitude of Mw=7.2 and was one the strongest aftershocks within 24-hours of the Sumatra-Andaman earthquake.

The earthquake was centred 80 kms WSW of Pulo Kunji (Great Nicobar Island), India,
84.6 kms SW of Edinburgh Point (Little Nicobar Island), India,
106 W of Campbell Bay (Great Nicobar Island), India,
120 kms SSW of West Bay (Katchall Island), India,
252 kms S of Malacca (Car Nicobar Island), India,
302 kms NW of Banda Aceh (Aceh, Sumatra), Indonesia,
531 kms S of Port Blair (South Andaman Island), India.

This earthquake was one of the strongest aftershocks to occur in the Andaman & Nicobar archipelago in the wake of the 2004 Sumatra-Andaman earthquake and occurred within 4-hours of the mainshock. Tremors from the earthquake were felt at Georgetown in Malaysia and at Phuket in Thailand. No felt effects were available from the Nicobar Islands or adjoining parts of Sumatra nor were any effects reported from southern India.Other large aftershocks within a week of 26 December included one off Car Nicobar on 26 December at 9:20 UTC that had a magnitude of Mw=6.9 (IMD; Mw=6.6 by HRV) and off the west coast of Aceh on 1 January 2005 at 6:25 UTC that had a magnitude of Mw=6.6. The latter was felt by people in tall buildings in Chennai, Tamil Nadu.


References
01) National Earthquake Information Centre (NEIC), Golden, USA.
02)
India Meteorological Department (IMD), Delhi.
03)
Harvard Centroid Moment Tensor Solution (HRV), Harvard, USA.
04) Macroseismic information has been compiled by the ASC from reports by local media and local NGO personnel.

Page Citation
Information on this page may be reproduced in print or electronically but it is requested that a citation be given to this website in the form of a link i.e. "www.asc-india.org".

Map Disclaimer
International boundaries of India (especially Arunachal Pradesh, Jammu & Kashmir, Himachal Pradesh and Uttarakhand) on the displayed map are from Google Maps. These do not conform to the external boundaries of India recognized by the Survey of India. That they are displayed on this page via Google Maps, is only for display purposes and this should not be misinterpreted as an endorsement of these boundaries by the Amateur Seismic Centre (ASC).

Page Updated: 22 Feb 2008 | Website Disclaimer

Amateur Seismic Centre, Pune,